Window-sash support



July 5, 1927.

W. L. THOMAS WINDOW sAsH SUPPORT l"l A 'l 2, 1926 an v Patented July 5, 1927.

tenses WINDOXV-SASH SUPPORT.

appngatimi fue@ April 2, i926. serieu No. 99,248.

rhis invention relatos to new and `useful improvements in window sash supports.

The object ot the invention. is to provide meansA ior supporting the sashes ot a window in counter-balanced relation without the use oi weights or sash cords.

A particular object of the invention is to provide an endless resilient andtleXible` connection passing' over pulleys in the head or" the window trame and having its ends looped under the bottom rail of each sash, whereby the upper sashy is held tightly against the top of the traine when the lower sash is pulled down to the bottom ot" the frame; and also whereby the upper sash is lowered when the lower sash is raised.

.A further object ot' the invention is to provide means for fastening the sashes either in their closed or adjustable open positions, and to apply said fastening means without the use of screws.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the 'following specitication and by reference to the accompanying drawings, in which an example of the invention is shown and wherein:

"o Fig. 1 is a front elevation of a window embodying my improved form of window sash supports,

Fig. 2 is an enlarged vertical sectional view taken on the line 2 2 of Fig. 1,

5 Fig. 3 is a partial rear elevation of a window showing my improved form of window sash supports,

Fig. t is a plan view of the locking elements,

10 Fig. 5 is a cross-sectional view taken on the line 5 5 of Fig. 4t,

Fig. 6 is a side view of the locking elements,

Fig. 7 is a perspective view of the top yoke member ot' the locking elements, and

Fig. 8 is a trout view of the toothed keeper showing the hand lever of the locking elements.

lig, 9 is a cross section on 8 8 of Fig. 2.

ln the draivings, the numeral 10 designates a window frame havinga channel 11 for the lower sash 12 and a channel 13 for the upper sash 11i. An endless connection 15 formed of a comparatively small and light l spring has its ends looped tension coileoL under the bottom rails of the sashes and sealed in grooves 16 therein; while the upright lengths oiu the connections engage in grooves 17 in the side rails of the sashes. The connection extends up through openings 18 in the top of the frame 10 and passes over pulleys 19.

By this arrangement no side boxes are required for the frame and only space for the pulleys is necessary above the frame. rhe connection 15 is placed under sufficient tension to take up any slack when the lower sash 12 is pulled down to the bottom of the `frame, thus holding the top of the upper sash tight against the top of the frame. However, when the lower sash is raised the upper sash will be lowered. The sashes are made of substantially the same weight so as to counter-balance each other.

In order to fasten the sashes and to hold them in adjusted position, I provide a yoke member 2O having lugs 21 and 22 respectively. rlhe lugs pass through slots 23 in the frame l0, so that the lug 21 will project into the Vchannel 11 and the lug 22 will project into the channel 13. The llugs are disposed relatively one `above the other at the point where the rails of the sashes overlap when the sashes are closed, so that each sash will be engaged thereby. The yoke is mounted on the outer wall of one side of the frame and confined by a crank member 241 pivoted in brackets 25 driven into theV frame on each side of the yoke.. The crank has a longitudinal blade 26 engaging the back of the yoke. A coiled spring 27 c onfined between the side of the frame and the yoke, tends to force the yoke outwardlyV against the blade, whereby the lugs are withdrawn into the slots 23 out of the paths of the sashes.

It willl be seen that by swinging the crank the blade 26 will force the yoke inwardly thus pressing the lugs into engagement with the side edges of the sashes and fastening them. The., crank has a laterally directed hand lever 28extending over the face of the window casing and engaging with teeth 29 in a keeper 30, whereby the crank and lugs are locked in position.y

This form of window sash support is easy to operate, efficient, reliable and less eX- pensive and less laborious to install and maintain. The connection is concealed in thegrooves. lVhere such a connection is used, the upper sash will not drop and stand open when the bottom sash is closed,

and bottom grooves io embrace each sash, and pulleys :it the top of the frame upon which Suid cable is supported intermediate its looped portions, the cable forming u curved sliding; hearing fzue upon *elle frame and providingtension throughout ils length lo seat the upper sash when the lower sash is Closed.

n testimony whereof ullif; my signature.

WILLIAM L. THORLIAS. 

